Verdun Francis R, Gutierrez Daniel, Schnyder Pierre, Aroua Abbas, Bochud François, Gudinchet François
University Institute for Radiation Physics, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
Curr Probl Diagn Radiol. 2007 Jul-Aug;36(4):176-84. doi: 10.1067/j.cpradiol.2007.04.001.
The purpose of this article was to review the strategies to control patient dose in adult and pediatric computed tomography (CT), taking into account the change of technology from single-detector row CT to multi-detector row CT. First the relationships between computed tomography dose index, dose length product, and effective dose in adult and pediatric CT are revised, along with the diagnostic reference level concept. Then the effect of image noise as a function of volume computed tomography dose index, reconstructed slice thickness, and the size of the patient are described. Finally, the potential of tube current modulation CT is discussed.
本文的目的是回顾在成人和儿童计算机断层扫描（CT）中控制患者剂量的策略，同时考虑到技术从单排探测器CT到多排探测器CT的变化。首先，修订了成人和儿童CT中计算机断层扫描剂量指数、剂量长度乘积和有效剂量之间的关系，以及诊断参考水平的概念。然后描述了图像噪声作为容积计算机断层扫描剂量指数、重建切片厚度和患者体型的函数的影响。最后，讨论了管电流调制CT的潜力。
